In the late 1970s, 3M conducted a study into the effects of using imagery in the context of a presentation. They took the same basic narrative, and then prepared two different slide decks: one which just used text on the screen and one which enhanced this with images.
The two decks were then shown to different audiences who were interviewed after the presentation to record their reactions. To say the results of the AB test were amazing would be an understatement.
The group who saw the image-enhanced version said that the presentation was more concise, clear, data-evidenced, professional, interesting, and – crucially – 43% more persuasive as measured by their desire to pay to hear more about the subject under discussion.
Just think about that for a second – the same message, the same narrative, and the same presenter. But, through careful use of imagery, a 43% increase in persuasive power.
But the power of images extends even further than this.